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I want to know which javascript version is my NodeJS is supporting ?
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To see if Node is installed, open the Windows Command Prompt, Powershell or a similar command line tool, and type node -v . This should print the version number so you'll see something like this v0. 10.35 .
Node. js is built against modern versions of V8. By keeping up-to-date with the latest releases of this engine, we ensure new features from the JavaScript ECMA-262 specification are brought to Node.
Switching among Node. 7; we can simply run either nvm use 12.22. 7 or nvm use 16.13. 0 to easily switch into either version we need. Note that since we only have one version that begins with 12, 14, or 16, we can switch versions with a simple nvm use 16 , nvm use 14 , or nvm use 12 command.
Use process.versions. From that page in the documentation:
console.log(process.versions); outputs
{ node: '0.4.12', v8: '3.1.8.26', ares: '1.7.4', ev: '4.4', openssl: '1.0.0e-fips' } EDIT: V8 uses the ECMAScript as specified in ECMA-262, 5th edition.
Reference: http://code.google.com/p/v8/
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